Power take-off mechanism



March 10, 1953 D. G. ROOS ETAL POWER TAKE-OFF MECHANISM Original Filed March 10, 1945 3 Sheets-Sheet l Q s m m mm B 4 T 7 HL AA 5 3 MW 6 u 5 w. 6 6 6 x M 6 55 Q a n I 45 M. 7 5 in I 5 M s w 6 5 V4 1 A 7 MM W 5 4 March 10, 1953 D. G. ROOS ET AL POWER TAKE-OFF MECHANISM 3 Sheets-Sheet 2 Original Filed March 10, 1945 INVENTORJ'. .UBLMAH 5'. H005 BY- WAL T21; FEENNINQ.

Patented Mar. 10, 1953 POWER TAKE-OFF MECHANISM Delmar G. Roos and Walter F. Benning, Toledo, Ohio, assignors to Willys-Overland Motors, Inc.,

Toledo, Ohio, a corporation of Delaware Original application March 10, 1945, Serial No. 582,108. Divided and this application August 5, 1948, Serial No. 42,588

2 Claims. 1

This invention relates to'power take-off mechanismfor vehicles and more especially to power take-off units particularly usable with four wheel drive vehicles, and is a divisionof my copending application Ser. No, 582,108 filed March 10, 1945 and now issued as Patent No. 2,464,059 on March 8, 1949;

The invention embraces the provision of a power take-off unit supported independently of the vehicle power transmission mechanism but which is driven therefrom;

The invention comprehends a power take-off unit which is particularly adaptable for mounting at the rear of the vehicle frame where it is readily accessible for attachment to ower consuming units, and which is driven by and through means connected with the vehicle power trans-.- mission gearing. U I I An object of the inventionresides in the provision. of a power take-offfmechanism located at the rear of the vehicle and which is connected for actuation with the vehicle power transmission gearing through the medium of a clutch means so arranged that the clutch shifting lever may be disposed within convenient reach of the vehicle operator. 1 f

Another object of the invention resides in the provisionof a powertake-off unit disposed at therear of the vehicle frame, and driven from the power transmission gearing of the vehicle, the power take-off unit being arranged to receiveand be operatively connected with relatively stationary power consuming units, or which may be connected to wheeled units adapted to be towed by the vehicle in which ,a power connection is essential to their operation.

Another object of the invention resides in the provision of a power take-01f unit embodying motion-reversing gearing in which the gears may be of different sizes andwhose position may be reversed to secure different speed ratios between the power take-off shaft andits driving means.

Another object resides in the provision ofa power take-01f unit which is adapted to be connected to and operate various types and kinds of power consuming devices.

Still a further object is the provision of a power take-off unit which may be remotely positioned tion of the vehicle frame, the power take-off unit and its driving connection with thevehicle power transmission gearing; 7 I

Figure 3 is a vertical sectionalview illustrating the clutch means for connecting and disconnecting the power take-oft unit withthe vehicle power transmission gearing;

' Figure 4 is a horizontal detailed sectional view through the power take-01f unit illustrating a driving pulley in operative association with the power take-01f unit;

Figure 5 is a rear elevational view of the power take-01f unit and drive pulley illustrated in Figure 4;

Figure 6 is a view of the portion of the power take-off unit showing the take-off shaft and temporary cap for protecting the power take-off shaft. when not in use.- 7

While there is illustrated a form of the invention as particularly usable with a four wheel drive vehicle, it is to be understood that the power take-off unit may be used with any mechanism wherein the same may be found to have utility. I

Referring to the drawings in detail and initially to Figures 1 and 2, the invention is illustrated as embodied in a vehicle of the four wheel type in which all the wheels are driven. The vehicle illustrated embodies a frame It comprising longitudinally extending spaced side rails H and 12 which are joined together by means including transverse members l4, l5 and IS, the transverse with respect to the mechanism from which it derives its power yet connected thereto by a flexible drive, thus enabling the utilization of the unit with various types of vehicle.

Further objects and advantages are within the scope of this invention such as relate to the arrangement, operation and function of the re-- members being secured to the side rails by welding, riveting or other suitable means. Secured to the side rails H and I2 extending rearwardly of the frame is a reinforcing member I! formed with angularly disposed strut like portions l8 and H] which are secured at their point of con-' vergence 28 to the transversely extending frame member 16 arranged at the rear of the vehicle, the converging portion of member 11 being disposed above the transverse member 16 as particularly shown in Figure 2.

Mounted upon the frame structure ID is a vehicle body 23 in which are disposed seats 24, the body terminating at its forward portion in a cowl 25 and hood 25 enclosing an engine or source of power 3 I. The vehicle is provided with a steering wheel 21 and transmission control or gear shiftingi leverfl mounted;upon the steering column and-additional power-transmission control levers 29 and 30. The lever 28 is utilized for securing normal three speed ratios and reverse of the conventional transmission gearing mechanism contained within housing"32. Disposed at the rear of the rtransmission hpusing 32 is an auxiliary transmission ;gearing.,-.or

mechanism contained within a housing33 gen- .nect the transmission mechanism to the;;f-r ent wheels-.31 through the medium of aforwardly disposed propeller shaft 38 ,to efiect a transmission of:power to the front wheels. The control lever 30 is connected with-ashiftablegean (not shownycontained within the transfercasefor engagingand disengaging a drive-.to the vehicle wheels andfor. efiectinghigher.g-ear ratios for obtaining extremely low speeds for, the vehicle than ..are obtainable by the use .of the conventional .three speed transmission of the character .contained.with in,;the ,housingifl. It is .to he understood that the gearing -v,c ontained in. the

transfer case, 1. 33 ,operates in conjunction, with the gearing tcontained ,in .the transmission .housing 32 to give. a series.,of lower ,speeds and thus provide for the transmissign of increased pow er tothe drive wheels en blin the vehicle. .t s nerate. i n rough terrainor the like. A drive-is established .to the rear vehicle wheels 31' through the propeller shaft 38, thewheels being mountedupon an axle which is connected to'the frameby meanssof multi-leaf springs 39. 'llhe springs are connected attheir' forward ends to the frameside .rails by means of bracketsjfl, the rear ends of ,the leaf springs being connected to brac ets 4| carried bv the frame 10 through the medium of shackles 42.

Power take-off mechanism isprovided which is particularly adaptable for utilization with a vehicle off-he character disclosed herein. The power take-off means'or mechanism of the invention is adapted to be connected to )the vehicle power transmissiongearing so that the power for the take-off mechanism is obtained fromthe vehicle engine. As-shown in Figure 3, a shaft '45 extends into the transfer case 33 which'ds driven bvgearin contained within the transmission housin 32. Mounted-u on shaft-. bvmeans of a s line or kev connection (not shown) is a gear '46-whichis in operative en agement with other e ring in the tran fer casenot=shown) for obtaining a final drive to thefore and aft propellersh'aftstfi and-38- respectively for driving the :vehicle. Disnosedin alignment with shaft 45 is a shaft "48formed at one end with aseries "of clutch teethf49 which are in alignment with a series of correspondingly shaped clutchteethvSil-formed on an integral extension of gear "'46. 'r The shaft '48=-is journaled :on suitahleroller or other anti-friction bearings 5h mounted-on a plate or member 53t-forming atclosure for the'transfer case 33.

A shiftable clutch or clutching gear 54 is mounted for axial slidable movement on the teeth 49 formed on shaft 48 and is relatively movable for inter-engagement with the clutch teeth 5 formed on gear 46 to establish an operative driving connection between shaft 45 and shaft 48. 'i'The clutching gear 54 is provided; with a cirmumferentialrecess 55 into which projects a yoke 58 carried upon the end of a longitudinally disaloi posecl shifting rod 51. The rod 51 is provided at its end portion with a transverse pin 58 adapted to be straddled by a yoke formed at the lower -end-.ofia-, clutchshifting lever 59 having a manipulatingknob $0 the lever being fulcrumed J5 rupon apin fil secured within an upwardly pro- ,jeeting portion ,liLformed on the cover member j.. 53. {Iheopeningat the upper end of hollow pro- ,jectionfifil is closed by means of a flexible boot 63 which permits unrestricted movement of -20 clutehshifting lever 59 and serves to keep foreign matter from entering the housing 33.

(fixedly-mounted: upon shaft ,48 bye-means of a -lgey;.48'- .;-.-is a yflangedemember; 55;.which is held in place -by;; means of,,;a bolt, Ed -threaded intooan opening in the gshaftj 48. -;.The flanged. member .6 isu onnecte to .a ca n .6 which encloses .imiversa Joint mechani .(n s own) isWh h is connected to a drive shaft 10.

Secured to the -.-rear1,-vehicle-; frame members 2! 6 sand I 1. is a power, take oifunitcomprising a easingor housing '13; which is-formed with boss portions 14 bored to receive retainingbolts'fi fixedlysecuring the hcmsing to transversely extendin f am me b r n rsin 134s also .formed with a a ,boss portion .1 5 adapted to besecured by means. oi a' bolt :1 Lpassing; through the ,plate 20, and-through the framemernben l T to-a idead ed 5 9116 ioriheeqasing h housing 13 is provided with a removable plate 18 which carriesa .taperedroller or, anti-friction hearing 19. 1 The housing. .13.. is. formed with a fillppnrtonbridge flfl which .carries -a .simil ar itapered roller, bearing-.8 I a shaft 82,.being journaled upon the rollerrbearings Hand 8|. .The shaft,, 82 projects, exteriorly, and. forwardly of the housing 13 and has, ,its end vportion splined as at83 to receive a member 84 held in placeupon the shaft 2,1 3 mfians .ora bolt. 85. Secured to theflanged member is a casing 8E similarto the casing J58 and encloses universal joint, mechanism gpotehown) ,Vto. whichgis reconnected the rear end of the drive shaft 10. .Also carried v,up on sha t 8. 1 s asvaverx ts1g q 0 dis e be e embe 'fliandthe inn rra o beari and oil ,seal 9! surrounding; the sleeve and mounted in a removablew plate 92 serves, toprevent *leakage of lubrigant along the 'sleevejfl. The chamber in whichgbearing 19,is; disposed is enclosed" by means of a. cover 93.

\ Arranged in parallelism with shaft .82 is a second-shaft=9 5; which-is-journalled within the casing or enclosure13 -unontapered roller bearings 98 and Sl'i-bearing ;96;being supported ,upon a removableplate 98, the latter secured to the casing by means of -bolts 99,-the bearingQ'l being mounted in a recess formed; in an integral wall portion of easing". The'shaftBS hasa splined portion H]! which projects rearwardly and exteriorlyof casing 13, an oil sealt02 beingprovided surrounding "the unsplined portion 103 of shaft -to preventescape of lubricant from theghousing along the shaft 95. "The oil seal 102 is-mounted in a removable plate I 04.

The portion-of shaft .82 disposed: within the heusingflS is Ysplined as at 186 to :receive a spur gear 1111-. arrangedto rotate with the shaft 82.

The portion of the shaft 95 within thecasing I3 is splined as at I08 and upon the splined portion is mounted a spur gear I09, gear I09 being splined upon the shaft 95, the gears I01 and I09 being in constant enmeshment. By this means, rotation of the shaft 82 connected to a source of power causes rotation of shaft I08 in a reverse direction. In a power take-off mechanism of the character of our invention, it is desirable in some installations to change the ratio of the driven shaft 95 as compared with the speed of the driving shaft 82. This may be readily accomplished in our invention by forming gears I01 and I09 with a difierent number of teeth, for example, gear I09 may have 24:v teeth and gear I07 provided with teeth, under which condition shaft 95 will rotate slower than the driving shaft 82. If it is desired to increase the speed of the driven shaft 95, the gears I91 and I09 may be reversed, i. (3. gear I09 may be placed upon shaft 82 and gear I01 placed upon shaft 95 as these gears are interchangeable. l

The power take-off mechanism of our invention may be utilized for many and varied purposes. For example, if it is desired to transmit power to operate a corn picker, combine or other implement utilizing power, such implement may be connected to the splined portion I!!I of shaft 95 and may be driven therefrom. The invention is adaptable for use with other types of power consuming units or accessories which may be connected to shaft 95 and derive power therefrom. While we have illustrated in Figures 4 and 5 of the drawings an arrangement wherein a pulley unit may be connected to be driven by shaft 95, it is to be understood that other power consuming units or accessories may be connected to be driven by shaft 95 in lieu of the pulley construction illustrated. The drive pulley unit is inclusive of a casing III within which is mounted spaced tapered roller or anti-friction bearings H2 and H3. The casing III is formed with bosses III! which are bored to receive bolts or cap screws I It for securing casing III to the enclosure or casing 73. Journaled in the bearing H2 is a sleeve I I4 which is internally splined to cooperate with the splined portion IOI of shaft 95. Journaled on bearing I I3 is a mitre gear I I5 the hollow hub portion of which is internally splined to receive a. splined stub shaft N7, the shaft II'I extending into and being in interengagement with the splines formed on sleeve H4. A plurality of openings are formed in the walls of sleeve H4 to accommodate welding material H8 so that sleeve I I4 is fixedly secured to shaft I I1 whereby these elements rotate together. The end of casing III is closed by means of a cover H9 held in place by means of screws I 20, the cover also serving to secure the bearing I I3 in proper position. An oil seal I2I surrounds the sleeve II4 so that lubricant contained within casing III will not seep along the sleeve H4.

The mitre gear H5 is in mesh with a mitre gear I22 which is disposed upon the splined end I 26 of a shaft I25, the latter being arranged substantially at right angles to shaft 95. The shaft I26 is journaled upon spaced tapered roller bearings I2! and I28 mounted within a cylindrical housing I29, the latter being formed with a flange portion I39 which is secured to casing I I I by means of bolts I 3I. The shaft I has a splined portion I32 upon which is mounted a correspondingly splined hub portion I33 of a drive pulley I34. The extremity of shaft I26 is formed with a threaded tenon I35 to receive a nut I36 for securing the drive pulley I34 upon shaft I26. An oil seal I3? is interposed between the end of the housing I29 and the hub portion I33 of the drive pulley in order to prevent escape of lubricant from the housing I29.

It is to be noted that by simply removing the bolts H6, the casing III, casing I29 and drive. pulley I34 including their associated elements may be removed as the splined sleeve I I4 is slidable upon the splined portion "II of shaft 95. The casings or housings III and I29 are adapted to contain a supply of lubricant retained therein by the oil seals I2I and I31. Thus the pulley unit may be removed from engagement with shaft without loss of lubricant and reconnected for use without relubrication. Through the arrangement of our invention other power consuming units such as compressors, pumps or the like may be secured to casing I3 by means of the bolts H6 In the normal operation of the power take off means with the drive pulley unit connected to casing I3 as illustrated in the drawings, power is derived from the vehicle engine 3I through the transmission gearing to the gear 45. When the lever 59 is shifted to bring the shiftable gear 54 into engagement, with teeth 49 formed on shaft 48 and with clutch teeth 50 on gear. 46 an operative connection is established through the drive shaft I0 to the drive shaft 82. As gear I01 rotates with shaft 82, the gear transmits rotary movement to gear I09 thence to shaft 95 through sleeve II4 to the mitre gear II5. Mitre gear I I5 being in mesh with mitre gear I24, shaft 95 rotates shaft I26 upon which is secured the drive pulley I34 to transmit power to the drive pulley I34. It is to be understood that any type of mechanism utilizing power may be connected by a belt I40 to the drive pulley I34. To disconnect the transmission of power to the take-01f unit, it is only necessary to shift the lever 59 to a neutral position, that is, wherein the shiftable clutch gear 54 is out of engagement with the teeth formed on gear 46. It should be noted that through the use of the shaft I0 and the universal joints associated with each end thereof, the casing I3 may be positioned remotely from the transmission gearing in any convenient position upon the vehicle frame or other suitable support.

When the power take-off mechanism is not in use and accessories are disconnected therefrom, the splined portion IOI of shaft 95 may be enclosed by a cover or closure I45, the latter being shown in disassembled position with respect to shaft IOI as illustrated in Figure 6. The cover may be secured to casing I3 by means of the bolts H6.

It is apparent that, within the scope of the invention, modifications and different arrangements may be made other than is herein disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof.

What we claim is:

1. In combination with a vehicle frame, an engine supported by the frame; a power transmission housing supported by the frame; speedchanging gearing contained within the housing and driven by the engine; a transfer case secured to the transmission housing; a shaft in the transfer case driven from the gearing contained in the transmission housing; a supple- 7 mental shaft in saidz-transfercase journaled for. rotation :in amalalignment with the first-imentioned shaft; :a manually shiftable dental *ciutch disposed between said-shafts for operatively connecting and disconnecting said shafts; acasing disposed adjacent the rear of thevehiole frame and spaced from said transmission-housing and transfer case; :gearing contained 'within said casing; a shaft connecting the gearing insaidv casing with the supplemental shaft in the transfer case whereby the gearing in said casing is driven by the engine when the dental'clutch is in shaft-connecting position, and a driven unit rigidly secured to said casing whereby said driven unit is operated 'fromth'e gearing contained within said casing.

'2'. In combination with a vehicle frame-"an engine supported by the frame; a transmission housing "supported by the frame; speed-changing gearing contained within the housing and driven by said engine; a transfer case secured'to the said'casing; .igearing connectingasaid stub shafts; anniversalxjointmonnected.to one of said stub shafts: asecondunivefial joint connected to the'supplemental shaft journaled on said cover member; a propeller shaftconnecting said universal joints, the other of said stub shafts in said casing being formed with a splined portion extendingexteriorly of the casing; a drive unit rigid'iy :se'cured'to said casing, said drive unit including -a driving pulley, and means engaging the 'splined portion of the stub shaft extending from the casing for establishing a driving conmotion between said pulley and the gearing contained within .said casing.

DELMAR G. ROOS. WALTER F. BENNING.

REFERENCES CITED The following references are of record in thefile of. this patent:

UNITED STATES PATENTS Number "Name Date 1 1,456,289 Storey May 22, 1923 1,5'64180 Willard Dec. 1, 1925 1,696,179 Ahim Dec. '25, 1928 1,755,432 Dean Apr. 22, 1930 1,772,247 Forrester et 'a1.. Aug. 5, 1930 1,908,437 Nelson May '9, 1933 1,961,809 Wood u June 5, 1934 2,316,503 Curtis Apr. 13, 1943 

